PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-16:42:50
G01     44.1           20.2                8.4 +/-    3.02      18.4 +/-    3.02  0.040 / 0.050
G06     175.9          31.9               13.5 +/-    2.68      22.7 +/-    2.68  0.040 / 0.060
G13     242.1          26.7               12.6 +/-    1.68      23.7 +/-    1.68  0.140 / 0.380
G15     276.2          14.2               10.7 +/-    1.90      27.1 +/-    1.90  0.160 / 0.340
G17     336.8          76.0               12.1 +/-    0.42      12.4 +/-    0.42  0.110 / 0.180
G19     261.1          66.6               12.6 +/-    0.95      13.6 +/-    0.95  0.080 / 0.200
G24     318.1          13.7                8.1 +/-    1.30      20.7 +/-    1.30  0.040 / 0.040
G28     55.9           53.7               11.0 +/-    0.78      13.3 +/-    0.78  0.040 / 0.050
G30     152.0          31.9               11.4 +/-    1.10      19.3 +/-    1.10  0.120 / 0.290